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c++ Programming Glossary: testedWhy are redundant scope qualifications supported by the compiler, and is it legal? http://stackoverflow.com/questions/12135498/why-are-redundant-scope-qualifications-supported-by-the-compiler-and-is-it-lega supported by the compiler and is it legal I tested on two compilers and was surprised to see both support the following..
C++ Vector of Pointers to Objects http://stackoverflow.com/questions/1361139/c-vector-of-pointers-to-objects little to no comparable overhead but this claim should be tested. Regardless never explicitly free things in your code . Wrap..
Problems with Singleton Pattern http://stackoverflow.com/questions/1392315/problems-with-singleton-pattern prespective. Notably a singleton's constructor can only be tested once. You have to create an entirely new test suite in order..
http://stackoverflow.com/questions/14677997/stdfunction-vs-template The most popular is that they are horribly slow. I tested it and they truly suck in comparison with templates. #include..
http://stackoverflow.com/questions/1647631/c-state-machine-design machine design techniques. NOTE I am primarily after tried tested implementation techniques. UPDATED Based on all the great input..
Is it possible to write a C++ template to check for a function's existence? http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-template-to-check-for-a-functions-existence has_helloworld Generic value std endl return 0 I've just tested it with Linux and gcc 4.1 4.3. I don't know if it's portable..
Which C++ graph library should I use? [closed] http://stackoverflow.com/questions/2751826/which-c-graph-library-should-i-use Added OGDF c graph share improve this question I now tested the libs mentioned above and decided to use OGDF with GML output..
What are some of the “best” cross-platform C++ UI toolkits today? http://stackoverflow.com/questions/366043/what-are-some-of-the-best-cross-platform-c-ui-toolkits-today on Windows Qt draws the widgets quite well . I haven't tested it so i can't tell you the performance. There are more. But..
std::vector is so much slower than plain arrays? http://stackoverflow.com/questions/3664272/stdvector-is-so-much-slower-than-plain-arrays as an array blah blah blah. Today I went down and tested it seems to be not so Here's some test results UseArray completed..
C/C++: switch for non-integers http://stackoverflow.com/questions/4165131/c-c-switch-for-non-integers are some more usage possibilities have a look. NOTE Only tested with g . Update C 11 Lambdas and initializier list make things..
How to get a list of video capture devices (web cameras) on windows? (C++) http://stackoverflow.com/questions/4286223/how-to-get-a-list-of-video-capture-devices-web-cameras-on-windows-c and special details on getting cameras NAMES with correct tested answers How to get a list of video capture devices on Mac OS.. of video capture devices on Mac OS with correct not yet tested by my answers How to get a list of video capture devices on.. a list of video capture devices on windows with correct tested answers How to get a list video capture devices NAMES using..
How to solve Memory Fragmentation http://stackoverflow.com/questions/60871/how-to-solve-memory-fragmentation robust most of the time. Put another way it has been time tested to work very well for most any application. However no algorithm..
How to Compile for OS X in Linux or Windows? http://stackoverflow.com/questions/693952/how-to-compile-for-os-x-in-linux-or-windows
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle registers for this to compile well. This code has been tested to work well on Visual Studio 2010 2012 and GCC 4.6. ICC 11..
What is “rvalue reference for *this”? http://stackoverflow.com/questions/8610571/what-is-rvalue-reference-for-this out of overload set If after all overloads in the set are tested only one remains the overload resolution succeeded and the function..
“Undefined reference to” template class constructor http://stackoverflow.com/questions/8752837/undefined-reference-to-template-class-constructor code from accidentally using instantiations you have not tested for or planned for I know this works for cola float and cola..
Why does changing 0.1f to 0 slow down performance by 10x? http://stackoverflow.com/questions/9314534/why-does-changing-0-1f-to-0-slow-down-performance-by-10x i 0 when compiling with Visual Studio 2010 SP1. I haven't tested with other compilers. c performance visual studio 2010 compilation..
Smart Pointers: Or who owns you baby? [closed] http://stackoverflow.com/questions/94227/smart-pointers-or-who-owns-you-baby use and examples. Thus I recommend always using well tested Smart Pointers from a library rather than rolling your own...
C++11: Compile Time Calculation of Array http://stackoverflow.com/questions/12108390/c11-compile-time-calculation-of-array array_thinger 10 arr std ostream_iterator int std cout n Tested with g 4.7 You could skip std array entirely with a bit more..
http://stackoverflow.com/questions/12376461/what-actually-happens-when-a-function-with-the-warning-control-reaches-end-o stack corruption Or it's absolutely undefined behavior Tested with gcc 4.1.2 and 4.4.3 EDIT Reading the answers I understand..
Why does removing the _first_ element of a list invalidate `.rend()`? http://stackoverflow.com/questions/14760134/why-does-removing-the-first-element-of-a-list-invalidate-rend the _first_ element of a list invalidate `.rend ` Tested on Mac OS X using XCode 4.6. This example code shows removing..
Converting Unicode to Multibyte http://stackoverflow.com/questions/1525456/converting-unicode-to-multibyte
CRTP and dynamic polymorphism compile error http://stackoverflow.com/questions/15570333/crtp-and-dynamic-polymorphism-compile-error of the function it overrides 'C ' is not derived from 'A ' Tested on clang 3.0 gcc 4.7 and visual studio 2008. First solution..
corrupted const reference to a temporary object (life time) http://stackoverflow.com/questions/17236007/corrupted-const-reference-to-a-temporary-object-life-time int ret 0 if a ref ret 2 if a refnop ret 4 return ret Tested using GCC 4.1.2 and MSVC 2010 it returns 4 g g refnop.cpp ...
Is there anyway to write the following as a C++ macro? http://stackoverflow.com/questions/2196155/is-there-anyway-to-write-the-following-as-a-c-macro ThreadSafeLogging with the data collected previously. Tested g . Thanks credits to dingo for pointing out how to simplify..
dynamic_cast fails when used with dlopen/dlsym http://stackoverflow.com/questions/2351786/dynamic-cast-fails-when-used-with-dlopen-dlsym I do not understand why. Any clues Additional information Tested with gcc 4.4.1 libc6 2.10.1 Ubuntu 9.10 Example code available..
Unmangling the result of std::type_info::name http://stackoverflow.com/questions/281818/unmangling-the-result-of-stdtype-infoname It prints Type of ptr_base Base Type of pointee Derived Tested with g 4.7.2 clang 3.4 trunk 184647 on Linux 64 bit and g 4.7.2..
OpenMP: Huge performance differences between Visual C++ 2008 and 2010 http://stackoverflow.com/questions/4738045/openmp-huge-performance-differences-between-visual-c-2008-and-2010 problems I cross posted to MSDN forum STATUS UPDATE 3 Tested on Windows 7 64 bits and XP 32 bits with the exact same results..
Why does writing to temporary stream fail? http://stackoverflow.com/questions/5179522/why-does-writing-to-temporary-stream-fail T std ostream operator const T t const return oss t Tested and works. The first operator will return you the underlying..
Interview Question: Optimal Solution to the problem of finding Heavy integers http://stackoverflow.com/questions/7136590/interview-question-optimal-solution-to-the-problem-of-finding-heavy-integers there by gaining performance Here is the sample code in C Tested on VS 2010 . This has two functions one for the naive method..
copying and repopulating a struct instance with pointers http://stackoverflow.com/questions/7716525/copying-and-repopulating-a-struct-instance-with-pointers Oh compile with g O2 g test.cpp lboost_serialization Tested with boost v.1_42 through boost v.1_47 #include boost serialization..
Windows Unicode C++ Stream Output Failure http://stackoverflow.com/questions/9859020/windows-unicode-c-stream-output-failure fine How can I get those characters printed to my file Tested on both VC10 and VC11 under Windows 7 x64. Sorry for the poorly..
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